Creating Creamy One Pot Mac and Cheese can be straightforward if you follow these simple steps:

1. Prepare Your Ingredients: Gather all the ingredients and measure them out for easy access.
2. Heat the Broth: In a large pot, bring the chicken or vegetable broth to a boil over medium-high heat.
3. Add Macaroni: Once boiling, add the elbow macaroni to the pot. Stir occasionally to prevent sticking.
4. Season the Mixture: Add garlic powder, onion powder, mustard powder, salt, and black pepper to the pot. Stir well to combine.
5. Simmer: Reduce heat to medium-low and let the macaroni cook for about 8-10 minutes, or until tender. Stir occasionally to ensure even cooking.
6. Incorporate Milk and Butter: Once the macaroni is cooked, add the milk and butter to the pot. Stir until the butter is melted and the mixture is creamy.
7. Add Cheese: Gradually mix in the shredded cheddar and mozzarella cheese. Stir continuously until the cheese is fully melted and the sauce is smooth.
8. Taste and Adjust Seasoning: Taste the mac and cheese and adjust seasoning as needed. You can add more salt or pepper based on your preference.
9. Garnish: Once the cheese is melted and the sauce is creamy, remove from heat. Garnish with fresh chopped parsley for a pop of color.
10. Serve: Spoon the creamy mac and cheese into bowls and enjoy immediately!

These steps will guide you in creating this incredible dish effortlessly.